Note: I understand this doesn't include everybody in the U.S.
At our house in the Philippines we always had lizards or geckos, whatever you wanna call them, all over the walls and they were great at taking care of flies and mosquitoes. It was common to just be, you know, going about your day in your house and all the sudden just hear *gecko noise*. And the other thing we always had was ants - ants all over the kitchen, forming a line, doing their thing. We didn't bother them they didn't bother us. When I moved here I was so surprised at how much people freak out over having these things in their house and ants in their kitchen, and they buy all these chemical things to get rid of them.